Home / 55,357.18-76,399.23-31,487.38

Finding the Fourth Proportional to 55,357.18, 76,399.23 and 31,487.38

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Solution

The fourth proportional to 55,357.18, 76,399.23 and 31,487.38 is: 43,456.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,357.18 : 76,399.23 = 31,487.38 : x
  2. Step 2: Convert to fraction form
    55,357.18/76,399.23 = 31,487.38/x
  3. Step 3: Cross multiply
    55,357.18x = 76,399.23 × 31,487.38
  4. Step 4: Simplify right side
    55,357.18x = 2,405,611,586.72
  5. Step 5: Solve for x
    x = 2,405,611,586.72/55,357.18
  6. Step 6: Final answer
    x = 43,456.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.